Cerebrospinal Fluid Producers

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Cerebrospinal fluid (CSF) is created by special capillary networks located in the brain. CSF bathes the hollow regions of the brain, spinal cord, and around the central nervous system, within its protective coverings. The areas that the CSF pathway includes are:

A. the ventricles, spinal canal, and meninges.

B. the ventricles, spinal canal, and cranial nerves.

C. the spinal canal, ventricles, and spinal nerves.

D. the spinal canal, meninges, and cranial nerves.

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Correct Answer: A.the ventricles, spinal canal, and meninges.

The organs of the central nervous system (CNS), the brain and spinal cord, have hollow regions (ventricles and spinal canal, respectively). The CNS also contains the meninges, which consists of three layers of protective covering. The question states that CSF circulates in these areas. Thus A is the correct answer. The spinal nerves and cranial nerves are not part of the CNS, they are part of the peripheral nervous system (with the exception of cranial nerve II, but that’s a little advanced for the MCAT).

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